More to Earth Day than climate scare

I was happy to see that National Aquarium CEO John Racanelli wrote about the important activities that we, as individuals and as a society, can do to protect the environment, without once mentioning the impossible goal of "stopping climate change" ("Take back the planet," April 22).

Sadly, Earth Day Network, the organization behind Earth Day, is not so practical. Their website for 2013 Earth Day focused so intensely on climate change that one would think they were promoting "Climate Day."

This is a big problem for Earth Day's future. As the hypothesis that humanity's carbon dioxide emissions are causing dangerous global warming falls into disrepute, all those associated with the climate alarm will also lose credibility. Earth Day participants, indeed all practical environmentalists, must distance themselves from the ideologically-driven climate scare or risk the movement degenerating into irrelevance.

Tom Harris, Ottawa, Ontario, Canada

The writer is executive director of the International Climate Science Coalition.

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